Centrifuge



FIG. 1 is an isometric view of our new centrifuge design;

FIG. 2 is a front view thereof;

FIG. 3 is a right side view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The broken lines in the drawing views represent environments and form no part of the claimed design. 

The ornamental design for a centrifuge, as shown and described. 